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Finding the Fourth Proportional to 79,076.10, 118,614.15 and 75,663.30

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Solution

The fourth proportional to 79,076.10, 118,614.15 and 75,663.30 is: 113,494.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,076.10 : 118,614.15 = 75,663.30 : x
  2. Step 2: Convert to fraction form
    79,076.10/118,614.15 = 75,663.30/x
  3. Step 3: Cross multiply
    79,076.10x = 118,614.15 × 75,663.30
  4. Step 4: Simplify right side
    79,076.10x = 8,974,738,015.70
  5. Step 5: Solve for x
    x = 8,974,738,015.70/79,076.10
  6. Step 6: Final answer
    x = 113,494.95

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.